Although Calcium is lower on the activities series list I have seen calcium replace potassium in a reaction so the answer I think is YES
yes !
Assuming you have a "+" sign in between the two reactants, this represents a single replacement reaction. They products will be Mg and Na2SO4.
suggest other oxidizing agent that can be replace potassium permanganate
The copper will replace the silver in the silver nitrate solution, and silver metal will come out of the solution. This is called a single replacement reaction. The following equation represents the reaction. 2AgNO3 + Cu ---> Cu(NO3)2 + 2Ag
Yes, when sodium reacts with Hydrochloric acid it replaces the hydrogen as hydrogen gas. 2Na + 2HCl = 2NaCl + H2
silver nitrate (AgNO3) is an ionic compound and so does calcium chloride (CaCl2). Two ionic compounds react to produce two salts. This is called changing ions because Ag receives Cl now instead of NO3 and Ca receives NO3. Therefore, AgNO3 + CaCl2 = AgCl + Ca(NO3)2. A rule is present that Nitrate is soluble (it dissolves in H2O). Meanwhile, both, Cl and Ag are insoluble, therefore a solid we call as precipitate will settle to the bottom. this precipitate is AgCl (solid). All in all this reaction is called the precipitation reaction.
Yes. The potassium will replace the calcium in the calcium chloride, producing potassium chloride and calcium. This is an example of a single replacement/displacement reaction. CaCl2 + 2K --> 2KCl + Ca
It is inverse.
A single replacement reaction will not occur. In a single replacement reaction, either a metal will replace another metal in a compound, or an anion will replace another anion in a compound. Click on the related link to see the Wikipedia article on single displacement (single replacement).
Single Replacement Reaction.
Yes it is a chemical reaction, where 2 cations replace each other.
In a single-replacment reaction, atoms of an element replace atoms of another element in a compound. In a double-replacement reaction, two positive ions trade places between different ionic compounds.
A chemical reaction will, in some cases, rearrange the atoms in the reactants to form products. For example, KCl + Na ---> NaCl + K, because Sodium (Na) is more electronegative (ability of an atom to pull on electrons) than Potassium (K) and will replace it. Hence this reaction being described as "Single Replacement". There are also double replacement, synthesis, decomposition, and combustion reactions.
Copper is a less reactive metal than calcium, therefore it cannot replace the calcium in the calcium sulphate. Refer to the related link for a reactivity series.
There is something known as the activity series of metals. It is a list of the metals in order based on reactivity. For example, calcium is more reactive that magnesium, therefore calcium is higher on the list. Basically, when it comes to single replacement reactions, if you have a calcium ion or atom in the presence of a compound with magnesium in it, the calcium will replace the magnesium in the compound. Now, this is relevant because the 5 most reactive metals, lithium, potassium, strontium, calcium and sodium, are so reactive that they actually displace the hydrogen in water, making hydrogen gas and a hydroxide (with the metal). Potassium + Water = Potassium Hydroxide + Hydrogen gas. These 5 elements are so reactive because of their low ionization energies. They want to lose electrons and become part of a compound; even more so that a hydrogen atom does. So they will replace the hydrogen atom because it requires less energy to do so.
Fluorine will replace bromine to produce the compound lithium fluoride in a single replacement reaction.
no because cobal is more reactive than copper
Yes. According to the activity series of metals, the calcium will replace the iron in the iron chloride compound, forming calcium chloride and iron. Refer to the related link for an activity series of metals.